late 0.0.1055

API reference for Zernio. Authenticate with a Bearer API key. Base URL: https://zernio.com/api Versioning and deprecation: all endpoints are versioned in the URL path (current version: /v1). Breaking changes only ship in a new path version; existing versions keep working. Deprecated operations are marked 'deprecated: true' in this spec and announced in the changelog (https://zernio.com/changelog) before removal. Errors: every 4xx/5xx response is application/json with a machine-readable 'code' and a human-readable 'error' message (see the ErrorResponse schema). Request ids: responses carry an X-Request-Id header with the id we log the request under. Quote it when reporting a problem. A valid x-request-id you send is reused as that id.
Documentation 
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# UpdateAdRequestCreative

## Properties

Name | Type | Description | Notes
------------ | ------------- | ------------- | -------------
**promotion** | Option<**serde_json::Value**> | Not supported. Meta validates creative_sourcing_spec.promotion_metadata_spec on the create call and then discards it, so a Promotion set through the Marketing API never reaches the creative. Any object is rejected with 400 invalid_field_value. Send null or omit the field, and set the Promotion on the ad in Ads Manager. Verified on 2026-09-11 across Graph v19.0 to v25.0 and every write path. | [optional]
**creative_features** | Option<**std::collections::HashMap<String, Inner>**> | Meta Advantage+ creative enhancements. Map snake_case feature names to OPT_IN or OPT_OUT; Meta validates supported keys and unspecified features default to OPT_OUT. auto_promotion_tag is an Advantage+ enhancement, not the Ads Manager Promotion setting. The deprecated standard_enhancements bundle is rejected by Meta. (enum: OPT_IN, OPT_OUT) | [optional]
**headline** | Option<**String**> | Meta and LinkedIn (TikTok has no headline slot) | [optional]
**long_headline** | Option<**String**> | Google Display only. Replaces the responsive display ad's long headline. | [optional]
**business_name** | Option<**String**> | Google Display only. Replaces the responsive display ad's business name. | [optional]
**square_image_url** | Option<**String**> | Google Display only. Uploaded as a new square (1:1) marketing image asset that replaces the current one. | [optional]
**body** | Option<**String**> |  | [optional]
**description** | Option<**String**> | Link description slot (Meta `link_data.description` / `video_data.link_description`, LinkedIn creative description). | [optional]
**call_to_action** | Option<**String**> |  | [optional]
**link_url** | Option<**String**> |  | [optional]
**image_url** | Option<**String**> |  | [optional]
**video_url** | Option<**String**> |  | [optional]
**video_id** | Option<**String**> | Meta only. Reuse an already-uploaded ad video (from POST /v1/ads/videos or GET /v1/ads/videos) instead of re-uploading via videoUrl. | [optional]
**existing_creative_id** | Option<**String**> | Meta only. Repoint the ad at an existing library creative (from GET /v1/ads/creatives); all other creative fields are ignored. | [optional]

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